<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://cdn.bootcss.com/vConsole/3.3.0/vconsole.min.js"></script>
    <script>
        var vConsole = new VConsole();
    </script>
</head>
<body>
    
    <div>
        <label>audio input device: </label>
        <select id="audioSource"></select>
    </div>
    <div>
        <label>video output device: </label>
        <select id="audioOutput"></select>
    </div>
    <div>
        <label>video input device: </label>
        <select id="videoSource"></select>
    </div>
    <video id="video" autoplay controls width="250" height="150"></video>
    <button id="start">开始</button>
</body>
<script src="./js/client.js"></script>
</html>